Automobile jack



- May 21, 1929. H. H. MERRIMAN I 1,714,464

AUTOMOBILE JACK Filed June 30, 1927 2 Sheets-Sheet l ATTORNEYS y 21, 1929- I H. H. MERRIMAN- 1,714,464 Y AUTOMOBILE JACK I Filed June so, 192'! 2 Sheets-Sheet 2 l 40 carrying position.

Patented May :21,

, UNITED STATES PATENT orrlce.

' HENRY H. MERBJIAK, OF DECKEBVILLE, MICHIGAN.

AUTOMOBILE .mcx.

, Application filed June 30am. Serial No.'202,l i71.'

effective housing or box for the actuating parts while being transported.

' Fifth, to provide improved arrangement of screw and toggle and 'lubricating means therefor. I

7 Sixth, to provide an improved foot and head plate construction and connections'possessing elasticit Objects relating to details and economies of construction and o eration will appear from the detailed description to follow. The A strucinvention is defined in the claims. ture which is a preferred embodiment of my invention is illustrated in the accompanying drawing, in which:

Fig. 1 is a detail diagrammatic'side elevation of the frameof an automobile showing my improved jacks in carrying position. Fig. 2 is a detail diagrammatic elevation view of the rear axle of an automobile from the rear, with a pair of m improved-jacks in place, one being exten ed to the lifting osition and the ot er being collapsed to the oxed carrying osition. Fig. 3 is an en ar ed detail sectiqnal elevation view taken on ine 3-3 of Fig. 2, showing details of the rear axle attachin clamps and {showing thev jack in collapse boxed,

Fig. 4 is an enlarged detail view of the j ack shown detached with parts broken away to show details of construction of the interlocking gear teethand toggle and of the lubricant 4.5 container for the screw, and thelower clamp member and adjacent parts in vertical section.

Fig. 5 is an'enlarged detail sectional elevation through the screw and toggle joint con- .50 nection, showing the method of coupling the lubricant container thereto.

Fig. 6 is a detail sectional end view taken on line .6--6 of Fig. 2 showing the formation of the head and foot pieces of my imroved 'ack, the same being formed and olded o comparatively heavy sheet steel to give strength and elasticity thereto.

Fig. 7 is an enlarged detail. plan view of the top side of the head plate, showing the means to secure adjustable connection for the attaching clip and the means of adapting-Ito the angle of the axle or other part.

' ig. 8 is anenlarged detail side elevation of the front spring'and attaching c'lamp 'with my improved jack in collapsed position, the

front axle being in section.

Fig. 9 .is a detail elevation similar to Fig.

8 with only a broken section of the spring,

with the jack'partially extended, the leveler device being infsection on line 9:-9 of Fig. 10. Fig. 10 is an enlarged detail transverse sec tion of the springattaching clamp, taken on line 10-IO of F 1g. 8. j

The parts will be identified b their numerals of reference which are tie same in all the views.

1 is the rear axle of the'automobile shown in conventional form; 2 is the head piece of my improved jack-attached to the said rear axle by-suitable clip means. 3 is the "foot piece. 4 is the upper toggle arm pair made of channel bar pivoted at'5 5 to the head piece 2. 6 is the lower to gle arm pair formed" of channel bar pivote to the foot piece 3 by pivots 7 7 8 and 9 are the toggle joint connections to which the said toggle arms 4 and 6 The. opposite end is screw threaded through a hole in the toggle connection 9. Hubs are formed on the .inner sides of these joint couplings and a fabric tube 11 is disposed around the screw 10 with its ends secured to the said are pivotally connected by ivots 81, 81 and hubs by a strand of wire 111 (see Figs; 4 and 9) are whic The meeting ends of the toggle arms '4 provided wlth intermeshing teeth 41 serve to keep them balanced and equalized. Where the lower arms 6, 6 join to the foot 3, there is no such interlocking connection so' that the foot'is free to tip to any suitable. angle necessary to properly contact with the ground or pavement.

The head pieces 2 and the foot pieces 3 are formed by folding sheet steel upon itself, as

, shown in Fig.5. The top or head is riveted veniently accessible. -The clips, however, .may be of any appropriate design.- Those shown are for the rear axle and are a 'specific at 21 to the clip stra 23 which extends in ears'231 each side 0 the axle. A toothed block 25 grips the axle housing. A toothed grip bar 26 is disposed on the clip 23 (Fig. 3)

and-clip bolts 232 secure the? clamp in place; 'The'ends'of the head 2 are in the arc of a circle. The parts are thus readily adjusted to any angle desired. Holes 27 are to'receivc rivets with heads to facilitate angular adjustment in attaching. These ma have shim washers 28as well. This facilltates the 'at tachment so that the jack canbe set at an angle thatwill accommodate the running gear or any other parts and make it conform having merit, which I wish to claim specifically.

I- As illustrated in Fig. 2, the shoudered end ,of the screw 10 projects to the rear. It is provided with a cross pin 102 for connection to a; crank 103 of any desired form. The

- spring finger 61 is provided in the bottom of the channel 6 to contact withthe side of the I screw when the jack isclosed. The spring accidental turning and finger thus engaging the screw'prevents its puts all-parts under spring tension so that-t ere can be no'slack or rattle in the moving parts.

It will thusbe seen that by simply turning the crank the jack is brought into operation'. The foot 3 contacts with the ground and'oWing to its flexibility and because it is made of steel and is elastic, it adjusts itself freely tothe inequalities of the ground, and of course as the toggle approaches a straight line a ver strong pressure is exerted which readil li ts the automobile or other vehicle free 0 the road. By reversing the movement ofthe screw the jack is collapsed into very compact relation underneath the axle or frame, as the case may be, the toggle arms collapsing and contactingtogether to bring the wholestructure'into compact relation like a comparativelysmall oblong'box or straight horizontal bar, see Figs-.- 3 and 8, which is'sub- 'sta-ntially"inconspicuouswhen disposed inside the spring or parallel-therewith, for instance, see Figs.- 2, 3 and 8. While the fabric tube saturated with grease would be more or less unsightly, it is entirely encased by the channel toggle arms, as indicated Where there is a drop front axle I provide a spring attaching clamp with leveling device.

The bracket head piece 2 is modified and "extended at 21 beneath;the spring. It-is perforated at 22 for the clamp bolts 231. The

top clip 25 is divided with upturned ears-251 at thecenter and adjustably joined by screw bolt 252. Springs 221 are interposed on each clip bolt 231. to permit free spring action.

- At theinner endof the front channel bar 4'is secured a leveling lug 26-with projection 1. In a ack, the combination of a head piece formed of folded sheet steel to form a-top and side plates, a-clip to secure said head to the automobile axle, housing, or frame, a pain of upper toggle arms of channel form with intermeshing gear teeth pivoted to the said l1ead piece, a foot piece formed of folded sheet steel with side plates above, a pair of lower togglearms of'channel form each pivotally connected to said foot piece, toggle joint link block connections pivoted to said a screw connecting said blocks journaled through one of said link. blocks and screw threaded through the other, a flexible tubular.

lubricant container secured to'the said hubs toggle arms with inwardly projecting hubs,

of said link blocks and surrounding the-said screw," and means for driving the said screw to cxtendthe jack or to fold the same into a compact box-like casing beneath the automobile. l

2. In a jack, the combination of a head piece formed of folded sheet steel to form a top and side plates, a clip to secure said head 7 tdthe automobileaxle, housing, or frame, a

pair-of uppertoggle arms-of channel form with intermeshing gear teeth pivoted to the said head piece,a foot iecejformed of folded sheet steel with side p ates above, apair of lower toggle arms'of clmamel form pivotall}; connected to-said foot piece, toggle joint lin block connections pivoted to said toggle arms,

a screw connecting said blocks journaled through one of saidlink blocks and screw threaded throu h the other, and means for driving thesai screw to extend the jackor to fold the same into a compact box-like 'casing beneath the automobile.

3. In a jack, the combination of a head piece formed offolded sheet steel to form a top w and'side plates, a clip to secure said head to the automobile axle, housin or frame, a

pair of-upper toggle arms 0 channel form.

with intermeshing gear teeth pivoted to the said head .piece, a foot piece formed of folded sheet steel with side plates above,;a pair oflower toggle arms of'channel form pivotall connected to said foot piece,- toggle joint lin block connections pivoted to said toggle arms, a screw connecting said blocks, and means for driving the said screw to-extend the jack or tofold the same into a compact box-like casing beneath the automobile. g 4. In a jack,,thecombination of ahead piece, a clip to secure said head tothe auto- 1 mobile axle, housing, or frame, a pair ofupper toggle arms with 'intermeshing gear teeth pivoted tothe said head piece a foot piece ormed offolded sheet steel with side plates connecte above, a air of lower toggle arms pivotall d to said foot piece, toggle oint lin block connections pivoted to sm toggle arms with inwardly projecting hubs, a screw. connecting said blocks 'ournaled throu 11 one of said link blocks and screw threade through the other, a flexible tubular lubricant container secured to the said hubs of. said link blocks and surrounding the said screw, and means for driving the said screw to extend the jack or to fold the same into a compact box-like casing beneath the automobile.

5.In a jack,-the combination of a head a piece, means to secure said head to the automobile axle, housing, or frame, a pair of upper toggle arms of channel form with intermeshing teeth pivoted to the said head piece, a foot ice,'a pair of lower to gle arms of channe form pivotally connected to said foot piece, toggle joint link block connections pivoted thereto with inwardly projecting hubs, a screw connectin said blocks journaled through one of said locks and screw threaded through the other, a flexible tubular lubricant container secured to. the said hubs of said link blocks and surrounding the said screw,

and means for driving the said screw to extend the jack'or to fold the same into a .compact box-like casing beneath the automobile.

6. In a jack, the combination of a head piece, a means to secure said head to the automobile axle, housing, or frame, a pair of upper toggle arms of channel form with intermeshing teeth pivoted to the said head piece, a fOOtPIBCG, a pair of lower toggle arms of channel form pivotally connected to said foot piece, toggle joint link block connections pivoted thereto with inwardly projecting hubs,

through one of said blocks and screw threaded through the other, and means for driving the said screw to extend the jack or to fol the same into a compact'box-like casingbeneath the automobile.

, 7'. Ina jack, the combination of a head piece means to secure the same" to an automobile, a pair of up erto gle arms of. channel form pivoted $01516 saidhead piece, a foot piece, a pair of lower toggle arms of channel form each pivotally-connected'to said foot piece, toggle joint link block connections pivoted to said toggle arms to couple the upper air to the lower air, a screw. connecting said locks 'ournale through one block and threade through the other, means for drivin" said screw to actuate the jack an'dIto fold the same into a compact box-like casing embracing and enclosing the said screw, as specified. 1

8. In a jack, the combination of a head piece, means to secure the same to an automobile, a pan of upper toggle arms of chan-' 'nel form pivoted to the said head piece, a

/ HENRY H. MERRIMAIN.

a screw connecting said blocks journaled 

